Use Xmlhttp's getResponseHeader and setRequestHeader Method
DIM logXML, IDPW, Postxml, Info, cookie
IDPW = "ID = abc & pw = pass"
Set logXML = Server.createObject ("Microsoft.xmlhttp")
Logxml.open "pos", "http:// myserver / login", false
Logxml.send IDPW
Cookie = logXML.GetResponseheader ("set-cookie")
Info = "title = hello & content = world"
Set postXML = Server.createObject ("Microsoft.xmlhttp")
Postxml.open "Post", "http:// myserver / post", false
Postxml.SetRequestHeader ("Cookie", cookie
Postxml.send